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Radiant|Lab Grown|IGI

1.64ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG804668362

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG804668362

Diamond specifications and retailer prices

From $937 USD
As of November 1, 2026
Save $3,373 USD (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,310 USD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 1.64ct lab-grown radiant diamond

This 1.64ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804668362 or 804668362. Listed at 8 retailers as of November 1, 2026, with prices from $937 to $4,310, a $3,373 spread on the same certified stone. Do Amore Diamonds lists it at $4,310. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.64
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.7°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804668362
Dimensions8.21 × 5.86 × 3.98 mm
L/W Ratio1.40
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.21 mm5.86 mm1.64 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804668362
Side View
Table 66.0%Crown 43.7°Girdle: MediumPavilion 39.8°Culet: NoneDepth 67.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $4,310 USD|Low: $499 USD|High: $5,200 USD|Avg: $2,068 USD|-12.2%
Do Amore Diamonds
Retailer 2
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November 2, 2026
Retailer 3$499 USD
Retailer 6$544 USD
Retailer 14$937 USD
Retailer 12$940 USD
Retailer 18$994 USD
Retailer 17$1,239 USD
Retailer 5$1,299 USD
Retailer 4$1,359 USD
Retailer 10$1,474 USD
Retailer 2$1,503 USD
Retailer 16$1,989 USD
Retailer 7$2,286 USD
Retailer 8$2,726 USD
Retailer 11$2,772 USD
Retailer 9$3,231 USD
Retailer 13$3,640 USD
Retailer 15$3,910 USD
Do Amore Diamonds$4,310 USD

16 data points across 18 retailers

8 retailers$937 USD to $4,310 USD

A
Cheapest Retailer
-
$937 USD
A
Retailer 2
-
$940 USD
View
B+
Retailer 3
-
$1,503 USD
View
B+
Retailer 4
-
$1,989 USD
View
B+
Retailer 5
-
$2,772 USD
£2,183 GBP
View
B
Retailer 6
-
$3,640 USD
View
B
Retailer 7
-
$3,910 USD
View
Most Expensive
B
Do Amore Diamonds
27-457A5424F · Nov 1
$4,310 USD
View
7 more retailers have this diamond
Prices start from $937 USDSave up to $3,373 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.64ct Radiant
$937 USD